package com.xd.center.http.config;

import com.xd.center.http.authentication.ApiAuth;
import com.xd.center.http.authentication.HttpAuth;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

import java.net.URI;

@Configuration
public class HttpConfiguration {
  @Bean
  public HttpAuth apiAuth() {
    return new ApiAuth();
  }

  @Bean
  public RestTemplate httpRestTemplate(ClientHttpRequestFactory clientHttpRequestFactory) {
    return new RestTemplate(clientHttpRequestFactory);
  }


  @Bean
  public ClientHttpRequestFactory httpRequestFactory(HttpClient httpClient) {
    return new HttpComponentsClientHttpRequestCRMFactory(httpClient);

  }

  @Bean
  public HttpClient httpClient() {
    Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
      .register("http", PlainConnectionSocketFactory.getSocketFactory())
      .register("https", SSLConnectionSocketFactory.getSocketFactory())
      .build();
    PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(registry);
    //设置整个连接池最大连接数 根据自己的场景决定
    connectionManager.setMaxTotal(200);
    //路由是对maxTotal的细分
    connectionManager.setDefaultMaxPerRoute(100);
    RequestConfig requestConfig = RequestConfig.custom()
      .setSocketTimeout(10000) //服务器返回数据(response)的时间，超过该时间抛出read timeout
      .setConnectTimeout(5000)//连接上服务器(握手成功)的时间，超出该时间抛出connect timeout
      .setConnectionRequestTimeout(1000)//从连接池中获取连接的超时时间，超过该时间未拿到可用连接，会抛出org.apache.http.conn.ConnectionPoolTimeoutException: Timeout waiting for connection from pool
      .build();
    return HttpClientBuilder.create()
      .setDefaultRequestConfig(requestConfig)
      .setConnectionManager(connectionManager)
      .build();
  }

  private static final class HttpComponentsClientHttpRequestCRMFactory extends HttpComponentsClientHttpRequestFactory {
    public HttpComponentsClientHttpRequestCRMFactory(HttpClient httpClient) {
      super(httpClient);
    }

    @Override
    protected HttpUriRequest createHttpUriRequest(HttpMethod httpMethod, URI uri) {
      if (httpMethod == HttpMethod.GET) {
        return new HttpGetRequestForBody(uri);
      }
      return super.createHttpUriRequest(httpMethod, uri);
    }
  }

  private static final class HttpGetRequestForBody extends HttpEntityEnclosingRequestBase {
    public HttpGetRequestForBody(final URI uri) {
      super.setURI(uri);
    }

    @Override
    public String getMethod() {
      return HttpMethod.GET.name();
    }
  }
}
